This is the only Tommy and Tuppence book that I’ve read that I’ve enjoyed as much as the Poirot and the Marple books, and the only one in which their personalities aren’t overpoweringly underwhelming. It’s also the last book that Christie ever wrote, although not the last to be published – interesting, as Tommy and Tuppence were her only characters who aged in real-time, in their seventies at the time of the novel’s creation.

Weirdly though, the reviews for the book are terrible, with many critics complaining that Christie is losing her grip and that conversations are repeated several times or that the ageing main characters take several chapters to solve simple riddles. I didn’t really see that, but then I read on the bus on my way to and from work, and so I can quite happily recap between sessions without even realising it.

Still, I wouldn’t say it’s one of Christie’s best works, and it’s only worth reading if you’re a hardcore fan of the great crime writer. Better titles include Death On the Nile and And Then There Were None, so be sure to read those and to investigate more of her work before digging in this deep.